STUDIES ON THE BIOLOGY OF EULECANIUM CILIATUM (DOUGLAS) (HEMIPTERA: COCCIDAE) IN ANKARA, TURKEY

Abstract

STUDIES ON THE BIOLOGY OF EULECANIUM CILIATUM (DOUGLAS) (HEMIPTERA: COCCIDAE) IN ANKARA, TURKEY.

Eulecanium ciliatum Douglas is a common pest species on Aceraceae and Rosaceae in Ankara province, Turkey. Its biology was investigated on Acer campestre, A. pseudoplatanus, Crataegus monogyna and C. oxyacantha in 1995-1996. E. ciliatum had one generation a year and overwintered as the 2nd-instar nymph. The number of eggs laid per female depended on the host, with the greatest number of eggs being laid on A. pseudoplatanus, on which it had the densest populations. The 1st-instar nymphs were found on both leaf surfaces but they preferred the upper surface. The 2nd-instar nymphs preferred sites on branches on the north-east side of the host trees. The sex ratio varied between 1.5 and 3.8¢:1TM.

Key words: Palaearctic, life cycle, ecology, host plants, settling sites, migration, Formica cunicularia, Camponatus aethiops, Plagiolepis vindobonensis, Anthribus fasciatus, urban entomology, Brunton compass, predator.